List of top Surveying and Mapping Questions asked in GATE GE

Identify the CORRECT statement(s).

During GPS Surveying, initialization of rover receiver is required for

How many number of cells of a 30 m spatial resolution DEM would be required to cover a 1:50,000 topographic map of Survey of India, assuming that 1 minute = 1.85 km?

Two surveyors, P and Q measured a 20 m distance six times each, as given below (in m):
Surveyor P: 19.97, 20.02, 20.04, 19.98, 19.96, 20.03
Surveyor Q: 20.05, 20.07, 20.05, 20.06, 20.07, 20.07
On the basis of accuracy and precision of the measured values, choose the CORRECT statement.

Identify the error, which has all the following characteristics:
(i) Caused by observer’s misunderstanding and carelessness
(ii) Reading an angle counter-clockwise, but recording it as clockwise angle
(iii) Sighting the wrong target
(iv) Poor judgment by the observer